In the design of a mechanical component for a mechanical device driven by a feedback controlled electric motor, the user is enabled to easily know how the properties of mechanical component affect the generation of abnormal vibrations of the mechanical device. In a design assist apparatus (1), the processor (11) is configured to set a plurality of parameters of a mathematical model of an analysis target component selected from one or more mechanical components (24, 56, 58) forming the mechanical device, compute a pole of a transfer function of the mechanical device associated with one or more vibration modes of the mechanical device according to the parameters, and create a stability determination diagram including an isoline of a real part of the pole of the transfer function.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The design assist apparatus according to claim 1, wherein, when the mechanical device has a plurality of vibrations modes, the stability determination diagram created by the processor includes isolines of the real part of the pole of the transfer function corresponding to the respective vibrations modes.
3. The design assist apparatus according to claim 1, wherein the parameters include parameters related to stiffness and damping characteristics of the mechanical component.
4. The design assist apparatus according to claim 1, wherein when the pole is arranged in descending order of imaginary parts of the pole of the transfer function, the isoline is generated for the real part of the pole which is lower than the pole having the largest imaginary part in absolute value by a difference between a degree of freedom of the mathematical model and a number of the vibration modes.
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December 17, 2018
June 6, 2023
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